How To Get Rid Of Girly Voice?

I am 26 years old boy but my voice resembles a girl i am facing so many problem with my voice sometimes I am loosing my confidence also at the time of teenage transition doesnt happend for my voice. can you tell me some ofthem so that little change in voice will help me alot. when i am speeking to a strange and new person they will think as if i am a girl.